Ray Bryant

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The Linux® kernel is unique in that it supports a wide variety of high-quality filesystems. For server systems, the most commonly used are Ext2, Ext3, ReiserFS, XFS and JFS. This paper compares the performance of these filesystems using Linux 2.4.17 and three benchmarks: pgmeter, an open source implementation of the Intel® Iometer benchmark; filemark (a(More)
He joined the University of Arizona faculty in 1967 and has taught classes in basic soils, soil morphology and classification, and soil and water conservation from 1967 until the present. His research has been in soil morphology and classification, and in using remotely sensed data to map soils and other natural resources. R. B. Bryant is a research(More)
PenguinoMeter is a new open-source benchmark for Linux that measures file-system data transfer rates. PenguinoMeter allows the user to specify the file-system workload to be used in the benchmark in a very flexible manner. The workload specification is patterned after that of the Intel® Iometer benchmark; the current version of PenguinoMeter can read(More)
Authors retain copyright to all submitted papers, but have granted unlimited redistribution rights to all as a condition of submission. Abstract The SGI® Altix™ 3000 family of servers and superclusters are nonuniform memory access systems that support up to 64 Intel® Ita-nium® 2 processors and 512GB of main memory in a single Linux image. Altix is targeted(More)
Introduction Just as other authors have compared the function available in Linux 2.4 to that available in Linux 2.2 (see, for example, [Linux 2.4]), the purpose of this paper is to compare the performance likely to be available in Linux 2.4 to the performance delivered by Linux 2.2. We make this estimate by comparing the performance of Linux 2.3.99 kernels(More)
The Linux kernel is unique in that it supports a wide variety of high-quality filesystems. For server systems, the most commonly used are Ext2, Ext3, ReiserFS, XFS and JFS. This paper compares the performance of these filesystems using Linux 2.4.17 and three benchmarks: pgmeter, an open source implementation of the Intel Iometer benchmark; filemark (a(More)
Flue gas desulfurization (FGD) gypsum was surface-applied on a poorly drained cultivated Coastal Plain soil in Maryland containing excessive amounts of plant-available phosphorus (P). Using a constant head double-ring infiltrometer, a field experiment indicated a slight increase in final infiltration rate (FIR) at 10 and 15 Mg ha-1 application rates,(More)
Rainfall is a driving force for the transport of environmental contaminants from agricultural soils to surficial water bodies via surface runoff. The objective of this study was to characterize the effects of antecedent soil moisture content on the fate and transport of surface applied commercial urea, a common form of nitrogen (N) fertilizer, following a(More)